On Sun, 17 Feb 2019, Sudip Mukherjee wrote:
Hi Greg,
On Mon, Dec 24, 2018 at 12:52:22PM +0100, gregkh@linuxfoundation.org wrote:
The patch below does not apply to the 4.14-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
The attached backported patch should apply to 4.14-stable tree.
I think we have a real usecase which is triggering this error and I was still in the middle of debugging that. But my initial analysis was showing that the userspace thread was stuck in the indefinite loop. I have a reliable reproducer of the problem and will setup a test tomorrow and confirm.
There are more patches in that area and you also need a fixed glibc.
Thanks,
tglx